# HydrateMii vs Today's Weight

The clearest difference is in-app purchases: HydrateMii at none against Today's Weight's 2. HydrateMii also leads on ads (none vs shown). Today's Weight's advantage is update cadence (every 3 days vs every 4 weeks) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. Today's Weight sells 2 in-app purchases, starting at $0.49 per month. HydrateMii asks for nothing beyond the download.

HydrateMii ships an update every 4 weeks, Today's Weight every 3 days. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | HydrateMii | Today's Weight |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 weeks | **Every 3 days** |
| Size | 3 MB | 63 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Jason McRainey](https://appshunter.io/developer/1739906265) | [takafumi naito](https://appshunter.io/developer/624435912) |

## What reviewers say

### HydrateMii

[App page](https://appshunter.io/ios/app/hydratemii/id6482852955)

**Features:** macOS Compatibility

**In-app purchases:** none


### Today's Weight

[App page](https://appshunter.io/ios/app/todays-weight-easy-tracker/id6786136357)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告オフ（月額） | $0.49 | per month |
| Remove Ads | $5.99 | one-time |


## Frequently asked questions

### Is HydrateMii free?

HydrateMii is free to download, with no in-app purchases.

### Is Today's Weight free?

Today's Weight is free to download, with in-app purchases available.

### Do HydrateMii or Today's Weight have ads?

Today's Weight shows ads; HydrateMii does not.

### Which is updated more often, HydrateMii or Today's Weight?

HydrateMii ships an update every 4 weeks, and Today's Weight every 3 days. Most recently, HydrateMii was updated on November 4, 2026 and Today's Weight on November 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*